Giant Australian Cuttlefish

Ascarosepion apama

Sea Life Native IUCN: Near Threatened

About

The largest of all the cuttlefish and an expert at colour change and camouflage. They can change colour in an instant, and by raising parts of their skin, they can also change shape and texture to imitate rock, sand or seaweed. These displays have various interpretations to other marine creatures and may be used for camouflage, mating or even hypnotising prey.

It can be identified by two rows of three skin flap-like papillae over each eye.
Their cuttlebones can be identified by the lack of a spine and a rough V-shaped thickening (callus) at posterior end. The outer cone is wide and flared in the adult

Size

Can grow to a mantel length of around 50cm

Habitat

Rocky reefs, kelp forests and seagrass meadows to a depth of 100 m

Distribution

From Brisbane in Queensland to Shark Bay in Western Australia including Tasmania

Local Sightings

1 recorded sighting in and around the area.

References & citations (3)
  1. The Atlas of Living Australia (accessed 2021-09-22 14:03:33)
  2. Finn, J.K. & Norman, M., 2011, Giant Australian Cuttlefish, Sepia apama, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria (accessed 2021-09-22 14:03:33)
  3. The IUCN Red List of Threatened Species (accessed 2021-09-22 14:03:33)

Header image: CC BY-SA 4.0 © Harry Rosenthal

Disclaimer: A lot of work goes into making sure identifications, descriptions, sizes, habitats and distribution details are as accurate as possible — but this information is ever-changing, so no guarantee is offered that it is correct or currently valid. Treat it as a guide and do a little of your own research for the latest word. Feedback and corrections are always welcome.